Can-body-making machine.



P. KRUSE.

CAN BODY MAKING MACHINE.

APPLICATION FILED JULY 13. 1912.

2 SHEETS-SHEET 1.

INVENTOR By Aftowzeys, Sunk k Patented Feb.23,1915.

P. KRUSE.

CAN BODY MAKING MACHINE. APPLICATION-FILED JULY 13, 1912.

Patented Feb. 23, 1915.

2 SHEETS-SHEET 2.

F j a F Z 6 K V W WU" A E x A iinirnn strains I rnrnn'r orribn PETER KRUSE, OF NEW YORK, N. Y., ASSIGNOR TO E. W. BLISS GOMPA'NY, OF BROOKLYN,

' NEW YORK, A CORPORATION OF WEST VIRGINIA.

' antimony-MAKING MACHINE.

v To all whom it may concern:

Beit known that I, PETER KRUSE, a citizen of the United States, residing in the borough of Brookl 11, county of Kings, city and State of New and useful Improvements in Can-Body- Making Machines, of which the following is a specification.

This invention relates to mechanlsm for making. can bodies havmg a lock seam or double-seamed side seam. Although appli-.

cable to round cans it is designed principally for cans of a cross-section approximating an ellipse, an oblong, a crescent, or other such ,forms, wherein the can body has its major which is expansible in the direction of the major dimension of the can body, that is to say, in a plane intersecting the seam and in a direction transverse to the plane of the completed scam. I provide the wing folders which wrap the sheet or blank of tin or other sheet metal around the horn with yielding portions, which serve to carry the edge portions of the blank around the narrower partof the horn and direct them together so as to interlock the hooked edges or flanges of the blank and then bear down elastically upon the blank, holding it against the former, and thereupon yielding to the ensuing expansion of the former whereby the hooked edges are drawn together and held during the final seaming operation, which is performed by the usual hammer or bumper as it moves forcibly against the horn.

According .to my invention the horn is constructed with its body portion remote from the seam as a fixed part constituting the base of the formerand with its portion adjacent to the seam, being that portion against which the seam is formed, and which I will therefore term the anvil portion, movable in a direction perpendicular to the longitudinal dimension of the horn. As the seam is most conveniently made upon the Specification of Letters Patent.

.ork, have invented certain new Patented'li eh. as, raw.

Application filed July 13, 1912. swa m, 709,227.

upper side of the horn, the latter being ar-j ranged horizontally, the anvil portion is the upper part of the horn and its movement is in a vertical direction, moving upwardly to expand the horn and downwardly to contract it. While these movements might be variously imparted to the anvil portion, the

preferable construction provides a longi- I a vertically reciprocating slide driven by a crank or eccentric from the driving shaft, which in its movements encounters such sliding piece within the horn. and imparts movements thereto properly timed with those of the wing folders and the hammer.

In the operation ofsuch machine the blank of sheet metal, previously cut to the proper size and shape, and having previously been folded at its edges 'to form the necessary hooks, is placed beneath the horn in position to be bent up around it. -At this time the wing folders are extended so that they lie horizontally or nearly so beneath the blank. The wing folders are then caused to swing upwardly whereby they Wrap the blank around the horn, the latter at this time being contracted. Toward the end of this u-p-swinging movement the pro]ect1ng plates carried by the folders press the edge portions of the blank and lay them down against the top or anvil portion of the horn. One of these plates is slightly in advance of the other so that the inner hook is laid down first against the horn, to insure that the hooked edges of the blank shall be brought together in their proper relation. The end of this movement brings the plates into substantially horizontal position with their free edges overlying the rounded upper face of the anvil portion of the horn so that they hold the blank down against such portion. Ordinarily in this movement these plates Will have been somewhat displaced up the anvil member of the horn is raised the folder plates continue to press down the edges of the blank upon it, and thus hold the hooks in proper relation while the expansion of the horn takes up the sheet metal and draws the hooks together. During this elevating movement of the anvil member the free edges of the folder plates are forced upwardly against the stress of their springs: Meanwhile the hammer or bumper has been descending, and by the time the hooks are fully interengaged the hammer comes down upon them and squeezes them together, thus completing the seam, and ordinarily forcing the seam down into a crease or groove formed to receive it in the anvil member of the horn, so that the thickness of the seam shall be forced to the inside of the can body, leaving the latter substantially flush or smooth upon the exterior.

In the accompanying drawings, which show the preferred embodiment of my invention Figure 1 is a vertical transverse section showing the parts before the operation of wrapping the blank around the horn. Fig. 2 is a vertical transverse section of the horn, folders and hammer showing the parts after the wrapping of the blank around the horn and before the expansion of the horn. Fig. 3 is a vertical longitudinal mid-section showing the parts in the same position as Fig. 2. Fig. 4 is a view similar to Fig. 3, but showing the parts in the position after the expansion of the horn. Fig. 5 is a cross section similar to Fig. 2 but on a larger scale, showing the parts after the expansion of the horn. Figs. 6, 7 and 8 are cross-sections of three different shapes of can bodies for which the machine is adapted. Fig. 9 is a cross-section of the horn in a different plane from Fig. 5.

In the drawings A designates the horn, B, B- the wing folders and O the hammer. These parts may be mounted and the folders and hammer operated in any ofthe ways common in can body making machines.

The born, A comprises a lower body portion A and an upper or anvil portion A Preferably the body portion is recessed centrally and the anvil portion is formed with a narrowed part which fits into such recess. In such recess beneath the anvil portion is an expander shown as a slide D movable longitudinally of the .horn and projecting out therefrom at one end as shown in Fig. 3. This slide D has on its upper side one or more inclined or wedgingfaces a a; and the anvil member A has at its lower part corresponding inclined faces b b. In the contracted condition of the horn, as shown in Fig. 3, the slide D is retracted so that its rear end protrudes, and .its abrupt faces are in close engagement with those of the anvil member. The spring 0 is provided to press back the slide D to this position. On forcibly pushing forward the slide D the inclined faces act to force u wardly the anvil member A as shown in Fig. 4:. For thus advancing the expander slide D an actuating part moving transversely thereto exerts a wedge action upon it. This operation is most conveniently performed by a vertically moving slide E having an inclined face 6 which, as it descends engages an inclined face d on the protruding rear portion of the slide D and hence pushes the latter forward. The slide E may be reciprocated from a crank, eccentric or cam on the main shaft of the machine. As this slide E reascends the spring 0 pushes the slide D back, and the recession of the inclined surfaces permits the anvil member A to descend. To insure the descent of this member springs f f are provided, being shown as flattened, helical, tension springs housed in lateral recesses in the horn, and en aging pins applied to the body member X and anvil member A thereof, so as to draw them together.

The wing folders B, B are pivoted beneaththe horn to a portion F of the frame of the machine. They are operated as usual in such machines by connecting rods G, G connected to a slide H beneath, this slide reciprocating vertically and being operated as usual by a cam I upon the main shaft of the machine, this cam having a cam groove engaging a roller it carried by the slide. The folders B, B are so formed that when swung upwardly they closely embrace the horn so as to conform the blank thereto. Each folder carries a freely mounted spring-pressed folding plate J, so located that when the folders are elevated to embrace the horn, these plates come just above the horn with their edges overlying the horn and adjacent to the hooked edges of the blank. The plates J J are shown as held in recesses in the folders and pressed down by springs K, K seated in cavities formed in the folders beyond such recesses. The plates J, J are of unequal length and their working edges are unequally beveled, as shown, so that one of them-shall act in advance of the other topress the inner hooked edge of the blank first against the horn.

In Figs. 1 to 5 the horn and folders are shown of the shape required to make a flatsided can with rounded intervening portions. The completed can of this section is shown in Fig. 6. In Fig. 7 is shown an elliptical can, and in Fig. 8 is shown a concavo-convex can, these being given as ex- -without departing from the maaaoa m amples of the shapes of can bodies that may be formed on this machine, each difierent shape of can body of course requiring a correspondingly shaped horn and requiring folders correctly conformed thereto.

The operation of the machine will be apparent from the foregoing description.

The invention is not limited to the precise details of construction set forth, it being apparent that the mechanical features and details may be considerably varied essential features of the invention, which are defined in the claims.

What I claim is 1. In a can body forming machine, a horizontal horn expansible in a vertical plane, combined with wing folders for wrapping a blank around such horn, said folders having portions adapted to yield to the expanding movements of the horn;

2. In a can body forming machine, a horizontal horn expansible in a vertical plane,

combined with wing folders for wrapping a blank around such horn, said folders pro- I vided with yielding folding plates adapted to press the edge portions of the blank around the horn, and to yield to the expanding movements of the horn.

3. In a can body forming machine, ahorizontal horn expansible in a vertical plane, combined with folders for wrapping a blank around such horn, said folders provided with folding plates adapted to yield in a vertical direction.

lid the horn, and springs pressing said platesagainst the horn, whereb they yield to the expanding movements 0 the horn.

6. In a can body forming machine, ahorizontal horn expansible in a vertical plane,

combined with folders for wrappingablank around such horn, and movable folding plates carried by said folders, having their active edges arranged the one in advance of the other, and springs pressing said plates against the horn, wherebythey yield to the expanding movements of the horn.

I 7. In a can body forming machine, a side folder for folding a blank around a horn, said side folder having a resilient portion a apted to engage the edge portion of a blank.

8. In a can body forming machine, the combination .of-a horn and a pair of folders adapted to fold a blank around said horn, said folders having resilient portions adapted to engage the edge portions of the blank.

9. In a can body formin machine, the combination of an expansib e horn, and a pair of folders adapted to fold a blank 4. In a can body forming machine, ahori zontal horn expansible in a vertical plane,

around said horn, said folders having resilient portions adapted to engage the edge portions of the blank.

In witness. whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

]PEIER KRUSE. V Witnesses:

ARTHUR G. FRAsnn, Fmao WHITE. 

